Alstom SF6 User Manual

Commissioning
Inspection prior to commissioning
P34--0001EN/03
2/6
07--2012
© ALSTOM 2010. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be
relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is
provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is
strictly prohibited.
GRID
SF
6
or SF
6
+CF
4gas
Reminder
The SF
6
or SF
6
+CF
4
enclosures are at the pressure assigned when they
were filled with SF
6
or SF
6
+CF
4
gas.
NOTE
: You are reminded that the gas used to fill the pole must
conform to the requirements laid out in IEC 60376.
Parameters
Read the following parameters :
D the site altitude, in metres,
D the site atmospheric pressurela in kPa,
D the site temperature in °C.
Verification
of the SF
6
or SF
6
+CF
4
gas
The SF
6
or SF
6
+CF
4
pressure values must be read on the verification pres-
sure gauge (tools). Do not take any account of the reading on the densi-
meter dial located on the filling control unit (if applicable), as it is not precise
enough for the inspection.
See ”Calculating the SF
6
or SF
6
+CF
4
gas filling pressure for use of
the pressure gauge (tools)”.
The following table defines the inspection steps :
Step
Action Remark
1 Measure the SF
6
or SF
6
+CF
4
gas pressure using the verifica-
tion pressure gauge (tools).
Follow the instructions in the
module ”Filling with SF
6
or
SF
6
+CF
4
gas.”
2 Correct the pressure read. Follow the instructions in the
module ”Calculating the SF
6
or SF
6
+CF
4
gas filling pres-
sure for use of the pressure
gauge (tools)”.
Rate of humidity
of the SF
6
or SF
6
+CF
4
gas
It is not necessary to check the rate of humidity of the SF
6
ou SF
6
+CF
4
,as
the equipment has a molecular sieve to to provide a dewpoint less than or
equal to 0°C for an ambient temperature of 20°C, for an apparatus filled at
its assigned presure for 2 to 3 months.
Verification
of the leaktightness
of the
assemblies under
SF
6
or SF
6
+CF
4
pressure
Each assembly pressurised with SF
6
ou SF
6
+CF
4
gas on site is mounted
with seals. The quality of the assembly must be checked.
This inspection must be carried out after all filling and pressure inspection
operations have finished.
Carry out this inspection by following the instructions in the module ”Filling
with SF
6
or SF
6
+CF
4
gas.”

Alstom SF6 Specifications

General

Brand	Alstom
Model	SF6
Category	Circuit breakers
Language	English